EP 3088481 A1 20161102 - WATER-BASED INK FOR INKJET PRINTING
Title (en)
WATER-BASED INK FOR INKJET PRINTING
Title (de)
WASSERBASIERTE TINTE FÜR TINTENSTRAHLDRUCK
Title (fr)
ENCRE À BASE D'EAU POUR IMPRESSION PAR JET D'ENCRE
Publication
Application
Priority
- JP 2013267036 A 20131225
- JP 2014083581 W 20141218
Abstract (en)
The present invention provides a water-based ink for ink-jet printing which is excellent in ejection stability and storage stability, in particular, excellent in quick-drying fixing properties and image uniformity when printing characters or images on a low-water absorbing recording medium, and an image forming method using the water-based ink. The present invention relates to [1] a water-based ink for ink-jet printing, including a pigment, a water-insoluble polymer, an organic solvent (C) and water, in which the organic solvent (C) includes diethylene glycol isopropyl ether (DEGPE) and an organic solvent (c2) having a 1-octanol/water partition coefficient that is smaller than that of DEGPE; a total content of the pigment, the water-insoluble polymer and DEGPE in the water-based ink is not less than 5.0% by mass; and a value obtained by multiplying a total content of the pigment and the water-insoluble polymer in the water-based ink by a content of DEGPE in the water-based ink is from 10 and 300; and [2] an image forming method including the steps of mounting a container filled with the water-based ink to an ink-jet printing apparatus equipped with an ink ejecting means; and ejecting the ink onto a recording medium having a water absorption of from 0 to 10 g/m 2 as measured by contacting with pure water for 100 ms to print characters or images thereon.
IPC 8 full level
C09D 11/30 (2014.01); B41J 2/01 (2006.01); B41M 5/00 (2006.01); C09D 11/38 (2014.01)
CPC (source: EP KR US)
B41J 2/01 (2013.01 - US); C09D 11/322 (2013.01 - EP KR US); C09D 11/36 (2013.01 - US); C09D 11/38 (2013.01 - EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3088481 A1 20161102; EP 3088481 A4 20170621; EP 3088481 B1 20190320; CN 105849209 A 20160810; CN 105849209 B 20190827; JP 2015124223 A 20150706; JP 6005622 B2 20161012; KR 102193245 B1 20201222; KR 20160102190 A 20160829; US 2017037268 A1 20170209; US 9670374 B2 20170606; WO 2015098701 A1 20150702
DOCDB simple family (application)
EP 14873897 A 20141218; CN 201480070139 A 20141218; JP 2013267036 A 20131225; JP 2014083581 W 20141218; KR 20167016506 A 20141218; US 201415106965 A 20141218